XMM-Newtonobservation of the eclipsing binary Algol
نویسندگان
چکیده
منابع مشابه
XMM - Newton observation of the eclipsing binary Algol
We present an XMM-Newton observation of the eclipsing binary Algol which contains an X-ray dark B8V primary and an X-ray bright K2IV secondary. The observation covered the optical secondary eclipse and captured an X-ray flare that was eclipsed by the B star. The EPIC and RGS spectra of Algol in its quiescent state are described by a two-temperature plasma model. The cool component has a tempera...
متن کاملThe eclipsing bursting X-ray binary EXO 0748−676 revisited by XMM-Newton
The bright eclipsing and bursting low-mass X-ray binary EXO0748−676 has been observed at several occasions by XMM-Newton during the initial calibration and performance verification (CAL/PV) phase. We present here the results obtained from observations with the EPIC cameras. Apart from several type-I X-ray bursts, the source shows a high degree of variability with the presence of soft flares. Th...
متن کاملXMM-Newton observations of the eclipsing polar V2301 Oph
We present XMM-Newton observations of the eclipsing polar V2301 Oph which cover nearly 2.5 binary orbital cycles and 2 eclipses. This polar is believed to have the lowest magnetic field strength (7 MG) of any known polar. We find evidence for structure in the X-ray eclipse profile which shows a ‘standstill’ feature lasting 26±4 sec. This allows us to place an upper limit on the mass of the whit...
متن کاملEclipsing Binary Pulsars
The first eclipsing binary pulsar, PSR B1957+20, was discovered in 1987. Since then, 13 other eclipsing low-mass binary pulsars have been found; 12 of these are in globular clusters. In this paper we list the known eclipsing binary pulsars and their properties, with special attention to the eclipsing systems in 47 Tuc. We find that there are two fundamentally different groups of eclipsing binar...
متن کاملXMM-Newton observations of the eclipsing polar EP Dra
We present XMM-Newton observations of the eclipsing polar EP Dra which cover nearly 3 binary orbital cycles. The X-ray and UV data show evidence for a prominent dip before the eclipse which is due to the accretion stream obscuring the accretion region. The dip ingress is rapid in hard X-rays suggesting there is a highly collimated core of absorption. We find that a different level of absorption...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Research in Astronomy and Astrophysics
سال: 2011
ISSN: 1674-4527
DOI: 10.1088/1674-4527/11/4/008